package in.co.sneh.controller;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
import in.co.sneh.model.FileUpload;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.fileupload.FileItemIterator;
import org.apache.commons.fileupload.FileItemStream;

import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 *
 * @author aptech
 */
public class FileUploadServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet FileUploadServlet</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet FileUploadServlet at " + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession session = request.getSession();
        if (session.getAttribute("fileList") != null) {
            session.removeAttribute("fileList");
        }
        response.setContentType("text/html;");
        String forward = "CreateRoom";
        String mode = "success";
        boolean isMultiPart = ServletFileUpload.isMultipartContent(request);
        if (isMultiPart) {
            ServletFileUpload upload = new ServletFileUpload();
            try {
                FileItemIterator itr = upload.getItemIterator(request);
                
                while (itr.hasNext()) {
                    FileItemStream item = itr.next();
                    if (item.isFormField()) {
                        String fieldName = item.getFieldName();
                        InputStream is = item.openStream();
                        byte[] b = new byte[is.available()];
                        is.read(b);
                        String value = new String(b);
                        response.getWriter().println(fieldName + " : " + value + "<br>");
                        
                    } else {
                        String path = getServletContext().getRealPath("/");
                        //Call a method to upload 
                        File result = FileUpload.processFile(path, item);
                        if (!result.equals("fail")) {
                            
                            if (session.getAttribute("fileList") == null) {
                                session.setAttribute("fileList", new ArrayList<String>());
                            }
                            ArrayList<String> fileList = (ArrayList<String>) session.getAttribute("fileList");
                            String name = result.getName();
                            fileList.add("/imageupload/"+ name );
                            session.setAttribute("fileList", fileList);
                            mode = "insert";
                            response.getWriter().print("file upload success");
                            
                        } else {
                            mode = "upload";
                            response.getWriter().println("Fail");
                        }
                    }
                    
                }
                request.setAttribute("mode", "insert");
//                forward = request.getContextPath()+ "/admin/room/CreateRoom.jsp";
                forward = request.getContextPath() + "/admin/room/CreateRoom.jsp";
                forward = "/admin/room/CreateRoom.jsp";
                request.getRequestDispatcher(forward).forward(request, response);
            } catch (FileUploadException fue) {
                fue.printStackTrace();
                
            }
            
            
            
        }
        
        
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
